Propulsion system



Aug. 19, 1924.

1,505,832 G. R. waasz PROPULSION SYSTEM Original Filed Oct. 12. 1921 2 Sheets-Sheet l WITNESSES "WE/W01? 2 637E655 WE/sz Arron/M Patented Aug. 19, 1924.

UNITED STATES PATENT OFFICE.

GEORGE E. WEISZ, OF BROOKLYN, NEW YORK, ASSIGNOR OF EIGHT-TENTHS TO AMELIE WEISZ, OF BROOKLYN, NEW YORK.

PROPULSION SYSTEM.

Application filed October 12, 1921, Serial No. 507,205.

To all whom it may concern:

Be it known that I, GEORGE R. nrsz, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and I mproved Propulsion System, of which the following is a full, clear, and exact description.

This invention relates to propulsion of marine vessels and has for an object to provide an improved propulsion system capable of use with ships or vessels of any kind.

Another object of the invention is to provide a propulsion system including one or more propellers arranged at the front of the vessel with a housing structure so arranged as to permit the propeller to act efficiently and at the same time prevent an undesirable churning of the water.

A further object of the invention is to provide a propulsion device for vessels arranged at the bow of the vessel and exteriorly thereof whereby unnecessary breaking down of the sides of the vessel is eliminated.

In the accompanying drawings Figure 1 is a top plan view of the front of a vessel provided with one embodiment of the invention.

Figure 2 is a side view of the structure shown in Figure 1.

Figure 3 is a front View of the structure shown in Figure 1.

Figure 4 is a fragmentary sectional View through Figure 1 on line 44.

Figure 5 is a transverse sectional view through Figure 4 on line 55.

Figure 6 is a horizontal sectional view through Figure 2 approximately on line 6-6.

In providing means for propelling vessels of different kinds a number of different devices have been presented, the most common being the ordinary propeller used at the rear. This form of propeller depends on the action of the blades in pushing against the water and at the same time pushing the vessel 2. Most propellers of this kind are set into the water to freely push the water to the rear and also radially, said radial movement being wasted power.

In the present invention a structure has been provided which is intended to cause less vibration of the ship and to secure a Renewed January 15, 1924:.

maximum pull from the propelling mechanism. In order to accomplish this result, the propeller has been arranged at the front of the vessel and provided with certain housings whereby not only will the propeller pull the vessel along at aspeed proportionate to the power used but all side movementor churning of the Water is dispensed with.

Referring to the accompanying drawings by numeral, 1 indicates a vessel which is provided with a front member 2 acting as a bumper for protecting the propeller and other parts. Connected with the vessel below the bumper 2 are semi-tubular side plates 5 and 6 acting as fins. These side plates merge together at the front for forming a tubular section 3 and flare rearwardly as indicated in Figure 6 whereby passageways 7 and 8 are formed which will accommodate water forced therethrough by the propeller 9. The propeller 9 is arranged in an annular casing 10 which slightly flares at 11 and which is provided with a network 12 and cross braces or ribs preferably cast integral with the casing 10. The space in the casing 10 is only large enough to permit free revolving of the propeller so that the water may be readily drawn in between the ribs 12 and forced rearwardly through the passage-ways 7 and 8. The cross ribs 12 prevent rotating or whirling of the water as well aspresenting means which act as a screen to keep foreign matter from coming in contact with the propeller. The action of the propeller increases the suction in proportion to the number of revolutions and thereby creates a minus at the bow of the ship and a plus on the thrust collar and stern of the ship due to atmospheric pressure plus the weight of the water column.

It will be noted that applicants entire device is arranged exteriorly of the vessel except the packing box 13 for the shaft 14 and, consequently, the vessel is not weakened while at the same time the water from the propeller is allowed a free passage rearwardly along the sides of the vessel. This movement of the water substantially parallel with the Vessel permits easier riding and the arrangement of the propeller in front secures a proper pull without the usual vibration. The arrangement of the propeller 9 in the casing 10 prevents vibration by reason of the uniform pressure on the propeller blades in any position within the casing. When the propeller has reversed, it acts as a powerful marine brake as it draws the water from the sides of the vessel and discharges the same away from the front.

The member 2 as shown in Figures 2 and 4 projects beyond the casing 10 and tlior oughly protects the same against striking another ship or other obstacle.

In the drawing a single propeller has been shown in which it discharges the water on opposite sides of the Vessel. If desired, twin propellers could be used and the construction slightly modified and the water driven substantially in a similar manner to the single propeller. If desired, the respective propellers can be arranged in the passageways or adjacent the passage-ways 7 and 8 whereby the full effect of both propellers may be secured without causing splashing or stirring of the water. The release of the water from the propeller is important and to present a structure which will cause the water to readily flow towards the rear, member 10 is provided not only with an inclined or flaring entrance 11 but a curved discharge 11 with an ample clearance for the propellers. Where the propeller is arranged in a straight tube and snugly fits the same, an appreciable amount of power is expended when churning the waters in the propeller rather than forcing the same through the pipe. This is obviated in applicants structure as shown in Figures l and 6.

lVhat I claim is 1. In a propelling structure for vessels a propeller positioned in front of the vessel exteriorly thereof, a hood surrounding said propeller, said hood being stationary, and a tapering casing extending fromsaid hood rearwardly, said casing being divided into two parts and extending on each side of the vessel so as to present a pair of gill structures through which the water from the propeller is discharged. p

2. In a propeller structure for vessels, a propeller positioned in front of the vessel exteriorly thereof, a hood surrounding said propeller provided with interior walls flaring from a central line in both directions, said propeller having blades formed of a shape at the ends to conform to the flare of one of said walls but to be spaced therefrom and a tapering casing extending from said hood rearwardly and overlapping part of said vessel, said casing being divided and eX-' tending on each side of the forward part of the vessel for directing the discharge from said propeller rearwardly along the sidesof the vessel. GEORGE R. WEISZ. 

